16-01-2024, 09:02 AM
Hi
The only difference I can find is that the D16 (516) is pre-gapped at 0.025 inch and the D16J (564) is pre-gapped at 0.03 inch. I guess if you have a factory making thousands of engines it saves valuable time to be able to just screw them in without tweaking the gap.
The only difference I can find is that the D16 (516) is pre-gapped at 0.025 inch and the D16J (564) is pre-gapped at 0.03 inch. I guess if you have a factory making thousands of engines it saves valuable time to be able to just screw them in without tweaking the gap.